Stupidity is all around us. But in order to vanquish it, we must first understand it. In The Psychology of Stupidity, some of the world's leading psychologists and thinkers--including a Nobel Prize winner and bestselling authors--discuss in articles, essays and interviews - why smart people sometimes believe in utter nonsense, - how our lazy brains cause us to make the wrong decisions, - why trying to debate fools is a trap, - how media manipulation and Internet overstimulation make us dumber, - why the stupidest people don't think they're stupid.